Carbureter.



M. A. DUZ I D. E.WASH|NGTON.

CARBURETER. APPLICATION FILED SEPT. 30. 1915.

Patente Oct. 23, 1917.

M. A. DUZ & D. E. WASHKNGTON.

CARBURETER.

APPLICATION FILED SEPT. 30. 915

meme@ om 23, 1917.

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entran etarras ramena enteren.

MICAL A. DUZ AND DIXON E. VVASHINGrTOIN,v OF PARIS, FRANCE.

CARBURETER.

To all whom t may concern:

Be it known that we, MIGAL A. DUZ, a citizen of "Iurkey, and DrxoN E. WASHING- TON, a citizen of the United States, both residing at Paris, in the Republic of France, have invented certain new and useful Improvements in Carbureters, of which the following is a specification.

This invention relates to a carbureter for explosion engines constructed to produce a more perfect explosive mixtur'e with the least resistance. The principalobject of the invention is to provide an improved con-k struction by means of which this result may be obtained. Other objects will appear hereinafter.

In the accompanying drawings, Figurel is a sectional view of a carbureter constructed in accordance with the principles of our invention; Fig. 2 is a sectional view taken on the line 2-2 of Fig. 1; Fig. 3 is a sectional view taken on the line 3-'3 of Fig. 1, and Fig. 4 is a sectional view taken on the line 4 4 of Fig. 1.

In this apparatus the primary air is admitted in the form of a concentric column which carries with it a flat sheet of liquid fuel which is injected transversely through the path of the air so that the fuel is dischargedv in a thin layer through which the air passes. Regulating mechanism is provided for controlling the primary air and fuel, and provision is also made for the introduction of secondary air, entering the Vprimary air and fuel mixture at Vthat part of the carbureter where the passage of the mixture is most rapid. j

In the preferred exemplification of our invention the reference numeral 5 designates generally a hollow truncated coneV with a base member 6 threaded in the bottom of the cone having a plurality of air admission inlets 7. Slidable between the cone and the casting is a throttle plate 8 having a plurality of openings 9 adapted to register with the air inlets 7 to control the air admission by the adjustment of the plate. The plate has an arm 10 projecting through a slot in the side of the cone which limits the travel of the plate in both directions.

In the base member 6 is a fuel inl-et chamber 11 surrounded by a jacket 12, and communicating with the fuel chamber through the jacket is a fuel admission pipe 13. Extending through the base member concentric with it and the cone 5 is a rotatable hollow post 14 having a threaded portion 15 thread- Specicaton of Letters Patent.

Application led September 30, 1915. Serial No. 53,2179.

post.v

Patented oet. 23, i917.

curved bifurcations which encircle the post 14 and are clamped thereto by screws 17.

Projecting inwardly from the cone 5 are perforated lugs 19 throughwhich the pins 18 extend7 and mounted on each pin 18 between its outer end andthe lug 19 1s aspring 20 which tends to keep the arms 17 in contact with the lugs 19. Extending upwardly from the throttle plate'8 are brackets 2l adapted to contact with the arms 17 when the arms are against the lugs 19.

At its upper end the post 14 is formed with'an internal valve seat 22 and with an upper valve seat 23. Adjacent'the chamber 11 of thebase member 6 the post 14 is formed witha transverse opening 24 communicating with the inside hollow ofthe post so that fuel maybe admitted from the chamber 11 through the hollow post. Extending through the post is a rod 25 having at its upper' end a valve 26 adapted to co operate with-the seat. 22 and another valve 27 adapted to coperate with the valve seat 23 with a projecting part 28 extending beyond the postand substantially restricting the concentric path between the post and the upper end of the cone. Projectingy from the'upper side of the valve 27 is a lugA 29.

Disposed below the transverse opening 24l iin the hollow of the post 14 and secured to Vthe` rod 25 is an angular enlargement'30 fitting within an angular opening in the post 14 and also serving as a packing preferably square or angular to closely lit the correspondingly shaped hollow of the post 14'to prevent the valve rod 25 from turnving .and to prevent theV liquid fuel from passing downwardly through the hollow t the lower end of the post l14 is a grooved portion 31, preferably circular in form, by means of which the post may be rotated and thereby raised or lowered in the cone because of the threaded portion 15. At the lower end of the rod 25 an adjusting nut 32 is threaded with a'spring 33 intending to press the valves 23 and 27 Von their respective seats. This nut 32 is formed with recesses 34 (seeFig. 4) which coper- Y tei-posed between the nutand thepost 14v ate with longitudinal ridges 35v on the` in-` side of a cup member 36 which is inserted between concentric extensions 37 and 3S of the pest 14. rlhis cup member is provided with va wheel portion 39 for rotating it, and that portion which is inserted between the concentric extensions of the post is formed with a foot 40 by means of which the cup member is held in place with a packing gland 41. Thus it is seen that the rotation of the member 36 may be employed to rotate the nut 32 and vary the tension of the spring 33.

At the upper end of the cone 5 is a inixture manifold 42 having a heating liacket for assisting in the vaporization, and extending inwardly is a threaded spider 44 through which a shaft 45 is threaded. At its inner end the shaft is formed with a notch 46 adapted to be inserted over the lug 251 at the top of the valve 27 and this shaft limits the opening of the valve 27. At its outer end the shaft is provided with an adjusting member 47 preferably in the form of a wheel by means of which the shaft may be rotated.

Between the manifold 42 and the cone 5 a plate 48 is secured which provides secondary air inlet openings 49 and has an inward extension 50 of substantially the same internal diameter as the upper end of the truncated cone but is spaced slightly therefrom so that air entering the openings 49 is delivered at the upper end of the cone in a thin sheet and at right angles to the mixture passing through the cone. A secondary air inlet chamber is formed at the top of the cone by means of a collar 51 secured to or formed integral with the cone, and in this collar are one or more check lvalves 52 for admitting air through the secondary air passages 49.

1t is obvious that this carbureter can be controlled and adjusted for a great many conditions and in a number of different ways. ln the ordinary operation of the carbureter the intake or suction in the manifold 42 draws air through the cone 5 and by the impinging of air against the projecting portion 28 of the valve 27 the valve is opened sufficiently to admit a quantity of fuel through the post 14 into the inrushing air in a thin sheet which is directed outwardly in a plane at right angles to the air current by the ledge 2S of the valve 27 against which ledge the fuel is directed when the valve is open, thus producing an intimate mixture, and if the suction is sufficiently great the secondary air valves 52 will be opened admitting air through the secondary air passages 49, also in the form of a thin sheet to produce a more initmate mixture.

In regard to the operation of the throttle plate 8, the openings 9 of the plate and ficiently to entirely close the passage bei tween it and its seat but maintains in its normal state a position very close to its seat so that a very thin annular' passage is always open around it. The valve 2G is adapted to be seated tightly upon its seat by means of the weight of the rod 25 and the spring 33, the combined loading on valve 26 being slightly more than is necessary to resist the static pressure of. the liquid fuel admitted through the pipe 13. The post 14 itself can also be raisedby rotating the member 31 and the tension of the spring 33 may be varied by rotating the member 39. The opening of the valve 27 may be limited, as before set forth, by the rotation of the shaft 45. lt is obvious, of course, that all of these adjustments couldhbe made in the ordinary automobile carbureter by suitable operating' connections with the rotating parts, and controlled from the dashboard.

Since the packing or nut 30 prevents the rotation of rod 25 in post 14, the nut 32 is turned on the rod by the rotation of the wheel or by the relative rotation of the wheels 31 and 39, the packing 30 sliding in the hollow post, and the extent of opening of the valves 26 and 27 being limited by the shaft 4*. The .notch 46 of the shaft 45 is forthe purpose of preventing anydirt or foreign substance getting between the upper end of the valve rod and the lower end of the shaft 45.

1t will be seen that the air is admitted in a. concentric column into which the fuel is admitted in a concentric sheet substantially at right angles to the direction of passage of the column and that after this intimate mixture has been effected a further addition of air in a thin sheet may be admitted to the mixture by the introduction of the secondary air to the mixture substantially at right angles to its direction of movement. By introducing the fuel and the air in this manner a more intimate mixture is obtained in the quickest time.

147e claim:

1. ln a. carbureter, a casing having a primary air inlet, means for directing a sheet of fuel across the path of air admitted through said primary inlet, and a secondary air inlet provided with means for directing air therefrom .in a thin sheet across the path of air admitted through said primary inlet and subsequent to the mixing of fuel with said primary air.

2. In a carbureter, a chamber having converging walls and openings at the larger end thereof for admitting a concentric ring of air thereto, means located centrally of said ring of air and adjacent the restricted portion of said chamber for directing a thin sheet of fuel outwardly across the path of said air, and a secondary air inlet located at the most restricted point of said chamber and provided with means for directing a thin sheet of air inwardly across the path of air of said chamber subsequent to the admission of fuel to said air.

3. In a carbureter, a conoidal-shaped casing having its base provided with openings arranged circularly around the outer portion thereof for admitting air thereto, a conduit arranged within said casing and provided with a discharge opening at a point adjacent the restricted end of said casing, a valve for controlling the discharge of fuel from said conduit, means for directing fuel thus discharged in a thin sheet outwardly from said discharge end across the path of movement of the air within said casing, and means for adjusting the position of said discharge opening relative to said casing.

4L. In a carbureter, a conoidal casing having a primary air inlet for admitting a concentric ring of air into the base of said casing, means for discharging fuel outwardly from the central portion of said casing adjacent the restricted end thereof in a thin sheet transversely of the direction of movement of air in said casing, and means for adjusting said air inlet and simultaneously adjusting the position of said fuel discharging means in the direction of the axis of said casing.

5. In a carbureter, a conoidal casing, means for admitting air into said casing at the base thereof, a conduit extending along the axis of said casing, means for supplying liquid fuel to said conduit, said conduit being provided with a discharge opening located adjacent the restricted portion of said casing and provided with a valve having duplicate valve members, one of which is slightly open when the other is closed, and the other of which is provided with an abutment member against which air in passing through said casing impinges to open said valve, means for adjusting the position of said valve along the axis of said casing, means for exerting resilient pressure tending to close said valve, means for adjusting the amount of said pressure, means for regulating the amount said valve is permitted to open, and means for controlling the amo-unt of air admitted into said casing.

6. In a carbureter, an air passage which converges in the direction of flow of air therethrough, means for mixing fuel with said air during the flow thereof through said passage, and means for directing a thin stream of air across the path of movement of said first-mentioned current of air after fuel has been mixed therewith and at the most restricted point of said passage.

7. In a carbureter, a casing tapering t0- ward one end thereof to provide a converging air passage having openings for admitting air at the larger end thereof, means for discharging a film of fuel across'the current of air thus admitted at a point slightly removed from the restricted end of said passage, means for discharging a secondary current of air in a thin film across the path of movement of said primary air current subsequent to the mixture of fuel therewith and at the point of greatest velocity thereof, and means regulated by the degree of vacuum for controlling said secondary air current.

8. A carbureter comprising-a chamber restricted at the central portion thereof and diverging at both sides of said restricted portion, means for connecting one of said diverging portions of said chamber' with an engine cylinder, means for heating said portion of said chamber, the other portion of said chamber being provided with passages for admitting air thereto -at the enlarged portion thereof, means for discharging a thin film of fuel across the lcurrent of air thus admitted at a position slightly removed from the restricted central portion of said chamber, means for controlling the amount of fuel thus admitted, means for regulating the position of discharge of said fuel along the axis of said chamber, means for directing a thin film of air inwardly across said chamber at the most restricted portion thereof, and valves controlled by the suction produced by said engine for closing said lastmentioned airinlet.

9. In a carbureter, a chamber having walls and Openings for admitting a ring of air thereto, means disposed centrally of said ring for directing a thin sheet of fuel outwardly across the path of the air, and a secondary air inlet located beyond the said MICAL A. DUZ. DIXON E. WASHINGTON.

` Witnesses:

CHAs. P. PREssLY, Gr. HOADLEY.

Copies of this patent may be obtained for rive cents each, by addressing the "Commissioner nf Patents,

Washington, 13.6. j 

